பரிசோதனை உயிரியல் ஐரோப்பிய இதழ் திறந்த அணுகல்

சுருக்கம்

Growth estimation and Length at maturity of a commercially important fish species i. e., Dayscieaena albida (Boroga) in Chilika Lagoon, India

S. K. Karna and S. Panda

The growth feature of the commercially important fish species, i.e. Dayscieaena albida (locally called “Boroga”), in the Chilika Lagoon, Orissa, India, was studied. In total, 4645 of D. albida samples were collected form fish landing centers of northern sector and central sector of the lagoon and measured with their total length (TL) during the period of June 2008 to May 2009. Different cohorts were identified through multiple length frequency analysis on the total length of the species and the growth curve was estimated. The estimated growth parameters of von Bertalanffy Growth Formula (VBGF), L∞ (cm), K, and t0 value were 73cm, 0.15, and -0.36 respectively. In total, 123 numbers of female samples of the species collected during April 2008 to March 2009 to investigate length at 50% maturity (L50). For the maturity analysis, the gonads were observed by eye, according to the description by Pollard (1972) and the data were calculated in each body length class of 10-mm interval. The estimated L50 for D. albida was 308mm (in total length).